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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Implies the amount of estrogen production






2. To remove/separate testicles from animal's body before animal reaches puberty






3. 1. brain function - 2. blood flow - 3. willing female






4. Animals which have only one estrous cycle (ex: dog - fox)






5. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)






6. Microscopic - make sure not sterile - very few bulls are actually tested






7. Prevent the cow from getting an infection from the calve






8. 1-2 days






9. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.






10. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.






11. 2 month growth cycle. stored in the epididymis of the bull






12. Produce testosterone. located between the seminiferous tubules






13. Can survive ~7 days in cow. vast majority <48 hours






14. ~305 days (altough often longer due to breeding difficulties)






15. What about the sperm for a bull which has been castrated but still has testicles?






16. Start of the reproductive tract for the female. located outside of the body






17. Prevent the cow from getting an infection from the calve






18. 147 days






19. Way to know everything is alright with the breeding male






20. Contains and regulates the temp of the testes for sperm production






21. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders






22. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.






23. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.

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24. Way to know everything is alright with the breeding male






25. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells






26. ~60 days before calving






27. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells






28. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat






29. (male) pushes the testes outward toward the legs for a cool-down off of the body






30. Front feet and head first. (except for hogs and dogs)






31. Front feet and head first. (except for hogs and dogs)






32. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %






33. (switzerland) 2nd in size and milk production - most muscle -






34. 19-23 (21) days






35. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat






36. 283 days






37. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






38. % of fat in milk. makes cheeses and ice cream. regulates cost of milk






39. Help to signal hormone levels which we need both in the brain right next to each other.






40. 24 hours before end of estrus cycle






41. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






42. Implies the amount of estrogen production






43. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.






44. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






45. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






46. 45-60 days after breeding; re-breed as required






47. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders






48. Allows extension of penis without fibro-elastic penis






49. When are dairy cattle dehorned?






50. 336 days